A small district of S Central Edinburgh, the South Side lies to the south of the Old Town, from which it is sharply divided by the Flodden Wall, and to the north of Newington. Dumbiedykes and Holyrood Park lie to the east, while St. Leonard's lies to the southeast, Lauriston to the west and the Meadows to the southwest. All three running in parallel N-S, its principal streets are Potterrow-Buccleuch Street, Nicholson Street-Clerk Street and the Pleasance-St. Leonard's Street. The middle of these is rather later than the others as a route out of the city, driven through as part of improvements in the late 18th century. Much of the University of Edinburgh is located in the South Side, including Old College, the McEwan Hall, the George Square campus and the Pleasance Sports Centre. During the only air-raid on Edinburgh during the First World War, bombs from a German Zeppelin airship struck Marshall Street and Haddon's Court (off Nicolson Street) on the night of 2nd April 1916, killing six people and injuring ten.